My son is 5 months, and I'm starting his AD early. I would like to get him a "birth year" razor. With that in mind, what currently produced razors should I be looking at for his first razor as a teenager? Do any of them still come with "date codes" a la techs and super speeds? I plan on putting the razor, a sample blade pack, and a VDH starter kit in a box with a label "DO NOT OPEN UNTIL FIRST MUSTACHE."